Our MFSYS25V2 is reporting that all four of the power supplies are "Unknown Devices" and the chassis is refusing to power up any of the servers with the error message "There is insufficient power available to power all the servers in the chassis. If all power supplies are powered and functioning properly, add additional power supplies.". Here are the steps that we have taken so far:

Powered all servers off, disconnected power from all four power supplies, waited 30 seconds, reconnected power and rebooted chassis

Removed power, unseated and re-seated all four of the power supplies in sequence

Reset and rebooted the CMM

Unseated and re-seated the following, each in sequence:

Front fan module

All servers

Both storage control modules

Both SWM

Replaced one of the power supplies with a known good spare

Three of the servers were powered on and accessible when I discovered this issue, so the power supplies are clearly functioning correctly, at least to a certain extent. It would be nice to get this chassis working again but if that is not possible, I'd really like to be able to at least temporarily force the servers to power on so that I can export the virtual machines that are running on them.

The system was working fine before this happened. Three of the six blades were running when this happened and they were functional after the problem started, but once I powered them off, they refuse to power back on.

The only power supplies that we have available are all the same make and model: Delta DPS-1000DB-A.

As an additional recommendation, try to use different power supplies, preferably with a higher wattage and also you can test your system with the minimal configuration and check if the problem continues.

We have already tried replacing power supplies without success which strongly indicates to me that the issue is not with the power supplies themselves. I don't have permission from my supervisor to purchase additional parts for this system unless we have a very clear diagnostic result indicating that a particular part has failed and given that all of these power supplies were working fine up until last week and were providing sufficient power for the servers, I definitely have not met that criterion.

I have attached a screenshot from the management UI; it is listing all four of the power supplies as "unknown device". What mechanism or component evaluates these power supplies? It seems pretty clear that is where the problem lies.

I appreciate your time and assistance with this issue but I haven't come away from this any closer to a solution than when we started. There is no way to force the servers to power on despite the power supplies being "unknown"? They work fine and have been providing more than enough power for these servers up until now. I understand that the device is relatively outdated and out of support which is why I am posting here rather than escalating a case.

I do understand your position and I was hoping we could provide enough feedback to assist you better.

I will contact you directly to see if you could gather the logs of the unit to further investigate this. Based on the information we have so far it seems that the issue is with the midplane.

I noticed you mentioned you have rebooted the unit and re seated some of the components. Could you try to power cycle the chassis and then just have 1 PSU inserted, then reconnect the management module and see how PSU1 is detected. If it is, then add one power supply at the time.